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Countersinks

602 products
Countersinks expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. This helps prevent the workpiece material from swelling when a screw is installed in the hole and tightened down in metalworking applications. Countersinks can also be used to debur holes for a smooth finish.
Number of Flutes

Smooth-Finish High-Speed Steel 6-Flute Countersinks

Smooth-Finish High-Speed Steel 6-Flute Countersinks
High-speed steel countersinks provide good wear resistance in a wide range of countersinking applications. Six-flute countersinks provide fast material removal and leave a smooth finish as they expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. They remove more material with each revolution and typically provide more wear resistance than countersinks with fewer flutes.

60 ° Included Angle

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82 ° Included Angle

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90 ° Included Angle

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100 ° Included Angle

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110 ° Included Angle

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120 ° Included Angle

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Smooth-Finish Carbide 6-Flute Countersinks

Smooth-Finish Carbide 6-Flute Countersinks
Solid carbide countersinks provide excellent wear resistance when machining the toughest materials, such as cast iron and stainless steel. Six-flute countersinks provide fast material removal and leave a smooth finish as they expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. They remove more material with each revolution and typically provide more wear resistance than countersinks with fewer flutes.

60 ° Included Angle

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82 ° Included Angle

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90 ° Included Angle

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100 ° Included Angle

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120 ° Included Angle

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Smooth-Finish Cobalt Steel 6-Flute Countersinks

Smooth-Finish Cobalt Steel 6-Flute Countersinks
Cobalt steel countersinks are harder than high-speed steel countersinks and provide good wear resistance when machining hard materials at high speeds. Six-flute countersinks provide fast material removal and leave a smooth finish as they expand the top of an existing hole in a workpiece to ensure screws install flush with the surface of the workpiece. They remove more material with each revolution and typically provide more wear resistance than countersinks with fewer flutes.

60 ° Included Angle

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82 ° Included Angle

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90 ° Included Angle

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100 ° Included Angle

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110 ° Included Angle

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120 ° Included Angle

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